The secret to long eyelashes? Mascara, of course. But when you shell out for a product, whether it's a Maybelline mascara or a Benefit mascara, you want to know that it's one of the best mascaras out there. So if you're wondering how to get longer eyelashes, pick up one of these gems. And if you've already found a mascara you love, be sure to leave a review -- we want to know your favorite lengthening, volumizing and waterproof mascaras.